Anecdotes

According to rumors, a more impressive looking monster was originally designed and built for the movie. However, only a few days before shooting was to begin, the monster was stolen. Pressed for time and out of money, director Vic Savage and his crew hastily threw together the infamous "pile of carpets" monster that appears in the film.

One of the last full-length features shot in the 1960s at the Spahn Ranch, which was in decline due to Hollywood's waning interest in westerns. The Ranch later achieved infamy as the Manson Family residence, but Charles Manson was in federal prison during filming, and the Family did not move to the Ranch until 1968; hence, rumors that Manson and his cohorts were somehow involved in the production are untrue.

The production was partially funded by cast-members; parts in the film were actually "sold" to gullible Hollywood hopefuls.

According to Michael Sauter's "The Worst Movies of All Time, Or: What Were They Thinking," the producer lost the original soundtrack in post-production. Unable to get all of the cast back together for dubbing, they were forced to record a narration and use surviving alternate takes to replace it. However, in one interview, William Thourlby indicated that the lack of soundtrack was a cost-savings measure, and that voices were to be dubbed later.

Evidence is lacking that this film ever received a theatrical release. There were no advertised theatrical showings in The New York Times, the Los Angeles Times, or The Chicago Tribune before it began to be shown on television circa 1976.